The importance of Devotion to Mary is expressed on the back of this card, with her words to the children of Fatima. Here is just a part of what is on the back: "You have seen Hell, where the souls of poor sinners go. To save them, God wishes to establish in the world devotion to my Immaculate Heart. If what I say to you is done, many souls will be saved and there will be peace." "In the end My Immaculate Heart will triumph. . . . "